[rollei_list] Re: 6 x 9 search

Be prepared for some vignetting though. You'll need at least a wide field
lens to cover the full format. That should give about a stop and a half loss
in the corners.

Tim

----- Original Message ----- 
From: "Eric Goldstein" <egoldste@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Thursday, August 30, 2007 5:13 PM
Subject: [rollei_list] Re: 6 x 9 search


> A 60ish mm lens on 23 is about a 28 mm (or shorter) on 35 format. See
> the DOF numbers I sited, generated with about a f/1200 of the FL
> Unless you are shooting close and very wide open, you won't need to
> focus this lens with anything except the distance scale...
>
>
> Eric Goldstein
>
> --
>
> On 8/30/07, Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
>
> >     The problem with Speed or Crown Graphics with Kalart
> > side rangefinders is that the RF is adjusted for only one FL
> > lens. Other lenses can be focused on the ground glass but
> > that precludes certain kinds of photography. On a 4x5 the
> > lensboard is riding the inside part of the rail and the drop
> > bed must be used so the rangefinder won't work even if it
> > could be adjusted for such a short FL. This might work on a
> > 2x3. I don't have a Pacemaker 2x3 so I don't know how it
> > would work with a short FL lens. Normal for these cameras is
> > either 102mm or 105mm, the diagonal being about 102mm so a
> > 60mm lens is not that short, about equal to a 90mm on a 4x5.
> >     Has anyone here had experience with  the rangefinder
> > Mamiya or similar cameras?  They look interesting for
> > hand-held work and I see them occasionally at local camera
> > sales. Lenses for other Mamiya cameras seem to be excellent
> > so perhaps this is a sleeper.
> >
> > ---
> > Richard Knoppow
> > Los Angeles, CA, USA
> > dickburk@xxxxxxxxxxxxx
> >
> >
> > ---
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